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Mirrors > Home > QLE Home > Th. List > lem3.3.3lem2 | Unicode version |
Description: Lemma for lem3.3.3 1052. |
Ref | Expression |
---|---|
lem3.3.3lem2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lear 161 | . . . 4 | |
2 | 1 | leror 152 | . . 3 |
3 | ax-a2 31 | . . 3 | |
4 | ancom 74 | . . . 4 | |
5 | 4 | lor 70 | . . 3 |
6 | 2, 3, 5 | le3tr1 140 | . 2 |
7 | df-id5 1047 | . 2 | |
8 | df-i1 44 | . 2 | |
9 | 6, 7, 8 | le3tr1 140 | 1 |
Colors of variables: term |
Syntax hints: wle 2 wn 4 wo 6 wa 7 wi1 12 wid5 22 |
This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a3 32 ax-a5 34 ax-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 |
This theorem depends on definitions: df-a 40 df-t 41 df-f 42 df-i1 44 df-le1 130 df-le2 131 df-id5 1047 |
This theorem is referenced by: lem3.3.3lem3 1051 |
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